-/* Copyright (C) 2000 Free Software Foundation, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
- *
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
- *
- * The exception is that, if you link the GUILE library with other files
- * to produce an executable, this does not by itself cause the
- * resulting executable to be covered by the GNU General Public License.
- * Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
- *
- * This exception does not however invalidate any other reasons why
- * the executable file might be covered by the GNU General Public License.
- *
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
- *
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice. */
-
-/* This file is included in vm_engine.c */
-
-#include "vm-snarf.h"
-
-/*
- * Variable access
- */
-
-#define LOCAL_VAR(OFFSET) SCM_VM_FRAME_VARIABLE (fp, OFFSET)
-
-#define EXTERNAL_FOCUS(DEPTH) \
-{ \
- int depth = DEPTH; \
- env = ext; \
- while (depth-- > 0) \
- { \
- VM_ASSERT_LINK (env); \
- env = SCM_VM_EXTERNAL_LINK (env); \
- } \
-}
-
-#define EXTERNAL_VAR(OFFSET) SCM_VM_EXTERNAL_VARIABLE (env, OFFSET)
-#define EXTERNAL_VAR0(OFFSET) SCM_VM_EXTERNAL_VARIABLE (ext, OFFSET)
-#define EXTERNAL_VAR1(OFFSET) SCM_VM_EXTERNAL_VARIABLE (SCM_VM_EXTERNAL_LINK (ext), OFFSET)
-#define EXTERNAL_VAR2(OFFSET) SCM_VM_EXTERNAL_VARIABLE (SCM_VM_EXTERNAL_LINK (SCM_VM_EXTERNAL_LINK (ext)), OFFSET)
-
-\f
-/*
- * Basic operations
- */
-
-/* Must be the first instruction! */
-SCM_DEFINE_INSTRUCTION (nop, "%nop", INST_NONE)
-{
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (halt, "%halt", INST_NONE)
-{
- SYNC ();
- VM_HALT_HOOK ();
- return ac;
-}
-
-\f
-/*
- * %push family
- */
-
-SCM_DEFINE_INSTRUCTION (push, "%push", INST_NONE)
-{
- PUSH (ac);
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (push_list, "%push-list", INST_SCM)
-{
- SCM list;
- for (list = FETCH (); SCM_NIMP (list); list = SCM_CDR (list))
- PUSH (SCM_CAR (list));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushc, "%pushc", INST_SCM)
-{
- PUSH (FETCH ());
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushl, "%pushl", INST_INUM)
-{
- PUSH (LOCAL_VAR (SCM_INUM (FETCH ())));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushl_0, "%pushl:0", INST_NONE)
-{
- PUSH (LOCAL_VAR (0));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushl_1, "%pushl:1", INST_NONE)
-{
- PUSH (LOCAL_VAR (1));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushe, "%pushe", INST_EXT)
-{
- SCM env;
- SCM loc = FETCH ();
- EXTERNAL_FOCUS (SCM_INUM (SCM_CAR (loc)));
- PUSH (EXTERNAL_VAR (SCM_INUM (SCM_CDR (loc))));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushe_0, "%pushe:0", INST_INUM)
-{
- PUSH (EXTERNAL_VAR0 (SCM_INUM (FETCH ())));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushe_0_0, "%pushe:0:0", INST_NONE)
-{
- PUSH (EXTERNAL_VAR0 (0));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushe_0_1, "%pushe:0:1", INST_NONE)
-{
- PUSH (EXTERNAL_VAR0 (1));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushe_1, "%pushe:1", INST_INUM)
-{
- PUSH (EXTERNAL_VAR1 (SCM_INUM (FETCH ())));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushe_1_0, "%pushe:1:0", INST_NONE)
-{
- PUSH (EXTERNAL_VAR1 (0));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushe_1_1, "%pushe:1:1", INST_NONE)
-{
- PUSH (EXTERNAL_VAR1 (1));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pushe_2, "%pushe:2", INST_INUM)
-{
- PUSH (EXTERNAL_VAR2 (SCM_INUM (FETCH ())));
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (pusht, "%pusht", INST_TOP)
-{
- ac = FETCH ();
- VM_ASSERT_BOUND (ac);
- PUSH (VM_VARIABLE_REF (ac));
- NEXT;
-}
-
-\f
-/*
- * %load family
- */
-
-SCM_DEFINE_INSTRUCTION (load_unspecified, "%load-unspecified", INST_NONE)
-{
- RETURN (SCM_UNSPECIFIED);
-}
-
-SCM_DEFINE_INSTRUCTION (loadc, "%loadc", INST_SCM)
-{
- RETURN (FETCH ());
-}
-
-SCM_DEFINE_INSTRUCTION (loadl, "%loadl", INST_INUM)
-{
- RETURN (LOCAL_VAR (SCM_INUM (FETCH ())));
-}
-
-SCM_DEFINE_INSTRUCTION (loadl_0, "%loadl:0", INST_NONE)
-{
- RETURN (LOCAL_VAR (0));
-}
-
-SCM_DEFINE_INSTRUCTION (loadl_1, "%loadl:1", INST_NONE)
-{
- RETURN (LOCAL_VAR (1));
-}
-
-SCM_DEFINE_INSTRUCTION (loade, "%loade", INST_EXT)
-{
- SCM env;
- SCM loc = FETCH ();
- EXTERNAL_FOCUS (SCM_INUM (SCM_CAR (loc)));
- RETURN (EXTERNAL_VAR (SCM_INUM (SCM_CDR (loc))));
-}
-
-SCM_DEFINE_INSTRUCTION (loade_0, "%loade:0", INST_INUM)
-{
- RETURN (EXTERNAL_VAR0 (SCM_INUM (FETCH ())));
-}
-
-SCM_DEFINE_INSTRUCTION (loade_0_0, "%loade:0:0", INST_NONE)
-{
- RETURN (EXTERNAL_VAR0 (0));
-}
-
-SCM_DEFINE_INSTRUCTION (loade_0_1, "%loade:0:1", INST_NONE)
-{
- RETURN (EXTERNAL_VAR0 (1));
-}
-
-SCM_DEFINE_INSTRUCTION (loade_1, "%loade:1", INST_INUM)
-{
- RETURN (EXTERNAL_VAR1 (SCM_INUM (FETCH ())));
-}
-
-SCM_DEFINE_INSTRUCTION (loade_1_0, "%loade:1:0", INST_NONE)
-{
- RETURN (EXTERNAL_VAR1 (0));
-}
-
-SCM_DEFINE_INSTRUCTION (loade_1_1, "%loade:1:1", INST_NONE)
-{
- RETURN (EXTERNAL_VAR1 (1));
-}
-
-SCM_DEFINE_INSTRUCTION (loade_2, "%loade:2", INST_INUM)
-{
- RETURN (EXTERNAL_VAR2 (SCM_INUM (FETCH ())));
-}
-
-SCM_DEFINE_INSTRUCTION (loadt, "%loadt", INST_TOP)
-{
- ac = FETCH ();
- VM_ASSERT_BOUND (ac);
- RETURN (VM_VARIABLE_REF (ac));
-}
-
-\f
-/*
- * %save family
- */
-
-SCM_DEFINE_INSTRUCTION (savel, "%savel", INST_INUM)
-{
- LOCAL_VAR (SCM_INUM (FETCH ())) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savel_0, "%savel:0", INST_NONE)
-{
- LOCAL_VAR (0) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savel_1, "%savel:1", INST_NONE)
-{
- LOCAL_VAR (1) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savee, "%savee", INST_EXT)
-{
- SCM env;
- SCM loc = FETCH ();
- EXTERNAL_FOCUS (SCM_INUM (SCM_CAR (loc)));
- EXTERNAL_VAR (SCM_INUM (SCM_CDR (loc))) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savee_0, "%savee:0", INST_INUM)
-{
- EXTERNAL_VAR0 (SCM_INUM (FETCH ())) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savee_0_0, "%savee:0:0", INST_NONE)
-{
- EXTERNAL_VAR0 (0) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savee_0_1, "%savee:0:1", INST_NONE)
-{
- EXTERNAL_VAR0 (1) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savee_1, "%savee:1", INST_INUM)
-{
- EXTERNAL_VAR1 (SCM_INUM (FETCH ())) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savee_1_0, "%savee:1:0", INST_NONE)
-{
- EXTERNAL_VAR1 (0) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savee_1_1, "%savee:1:1", INST_NONE)
-{
- EXTERNAL_VAR1 (1) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savee_2, "%savee:2", INST_INUM)
-{
- EXTERNAL_VAR2 (SCM_INUM (FETCH ())) = ac;
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (savet, "%savet", INST_TOP)
-{
- SCM cell = FETCH ();
- scm_set_object_property_x (ac, scm_sym_name, SCM_CAR (cell));
- VM_VARIABLE_SET (cell, ac);
- NEXT;
-}
-
-\f
-/*
- * branch and jump
- */
-
-SCM_DEFINE_INSTRUCTION (br_if, "%br-if", INST_ADDR)
-{
- SCM addr = FETCH (); /* must always fetch */
- if (!SCM_FALSEP (ac))
- pc = SCM_VM_ADDRESS (addr);
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (br_if_not, "%br-if-not", INST_ADDR)
-{
- SCM addr = FETCH (); /* must always fetch */
- if (SCM_FALSEP (ac))
- pc = SCM_VM_ADDRESS (addr);
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (br_if_null, "%br-if-null", INST_ADDR)
-{
- SCM addr = FETCH (); /* must always fetch */
- if (SCM_NULLP (ac))
- pc = SCM_VM_ADDRESS (addr);
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (br_if_not_null, "%br-if-not-null", INST_ADDR)
-{
- SCM addr = FETCH (); /* must always fetch */
- if (!SCM_NULLP (ac))
- pc = SCM_VM_ADDRESS (addr);
- NEXT;
-}
-
-SCM_DEFINE_INSTRUCTION (jump, "%jump", INST_ADDR)
-{
- pc = SCM_VM_ADDRESS (*pc);
- NEXT;
-}
-
-\f
-/*
- * Subprogram call
- */
-
-SCM_DEFINE_INSTRUCTION (make_program, "%make-program", INST_CODE)
-{
- SYNC (); /* must be called before GC */
- RETURN (SCM_MAKE_PROGRAM (FETCH (), SCM_VM_FRAME_EXTERNAL_LINK (fp)));
-}
-
-/* Before:
- ac = program
- pc[0] = the number of arguments
-
- After:
- pc = program's address
-*/
-SCM_DEFINE_INSTRUCTION (call, "%call", INST_INUM)
-{
- nargs = SCM_INUM (FETCH ()); /* the number of arguments */
-
- vm_call:
- /*
- * Subprogram call
- */
- if (SCM_PROGRAM_P (ac))
- {
- /* Create a new frame */
- SCM *last_fp = fp;
- SCM *last_sp = sp + nargs;
- VM_NEW_FRAME (fp, ac,
- SCM_VM_MAKE_ADDRESS (last_fp),
- SCM_VM_MAKE_ADDRESS (last_sp),
- SCM_VM_MAKE_ADDRESS (pc));
- VM_CALL_HOOK ();
-
- /* Jump to the program */
- pc = SCM_PROGRAM_BASE (ac);
- VM_APPLY_HOOK ();
- NEXT;
- }
- /*
- * Function call
- */
- if (!SCM_FALSEP (scm_procedure_p (ac)))
- {
- /* Construct an argument list */
- SCM list = SCM_EOL;
- POP_LIST (nargs, list);
- RETURN (scm_apply (ac, list, SCM_EOL));
- }
- /*
- * Continuation call
- */
- if (SCM_VM_CONT_P (ac))
- {
- vm_call_cc:
- /* Check the number of arguments */
- if (nargs != 1)
- scm_wrong_num_args (ac);
-
- /* Reinstate the continuation */
- SCM_VM_REINSTATE_CONT (vmp, ac);
- LOAD ();
- POP (ac); /* return value */
- VM_RETURN_HOOK ();
- NEXT;
- }
-
- SCM_MISC_ERROR ("Wrong type to apply: ~S", SCM_LIST1 (ac));
-}
-
-/* Before:
- ac = program
- pc[0] = the number of arguments
-
- After:
- pc = program's address
-*/
-SCM_DEFINE_INSTRUCTION (tail_call, "%tail-call", INST_INUM)
-{
- SCM_TICK; /* allow interrupt here */
- nargs = SCM_INUM (FETCH ()); /* the number of arguments */
-
- /*
- * Subprogram call
- */
- if (SCM_PROGRAM_P (ac))
- {
- if (SCM_EQ_P (ac, SCM_VM_FRAME_PROGRAM (fp)))
- /* Tail recursive call */
- {
- /* Setup arguments */
- int nvars = SCM_PROGRAM_NVARS (ac); /* the number of local vars */
- int nreqs = SCM_PROGRAM_NREQS (ac); /* the number of require args */
- int restp = SCM_PROGRAM_RESTP (ac); /* have a rest argument */
- VM_FRAME_INIT_ARGS (ac, nreqs, restp);
-
- /* Move arguments */
- nreqs += restp;
- while (nreqs-- > 0)
- {
- SCM obj;
- POP (obj);
- SCM_VM_FRAME_VARIABLE (fp, nvars++) = obj;
- }
-
- VM_FRAME_INIT_EXTERNAL_VARIABLES (fp, ac);
- }
- else
- /* Proper tail call */
- {
- /* FIXME: Must remove the last frame.
- FIXME: We need to move arguments before that. */
- SCM *last_fp = fp;
- VM_NEW_FRAME (fp, ac,
- SCM_VM_FRAME_DYNAMIC_LINK (last_fp),
- SCM_VM_FRAME_STACK_POINTER (last_fp),
- SCM_VM_FRAME_RETURN_ADDRESS (last_fp));
- VM_CALL_HOOK ();
- }
-
- /* Jump to the program */
- pc = SCM_PROGRAM_BASE (ac);
- VM_APPLY_HOOK ();
- NEXT;
- }
- /*
- * Function call
- */
- if (!SCM_FALSEP (scm_procedure_p (ac)))
- {
- /* Construct an argument list */
- SCM list = SCM_EOL;
- POP_LIST (nargs, list);
- ac = scm_apply (ac, list, SCM_EOL);
- goto vm_return;
- }
- /*
- * Continuation call
- */
- if (SCM_VM_CONT_P (ac))
- goto vm_call_cc;
-
- SCM_MISC_ERROR ("Wrong type to apply: ~S", SCM_LIST1 (ac));
-}
-
-SCM_DEFINE_INSTRUCTION (return, "%return", INST_NONE)
-{
- SCM *last_fp;
- vm_return:
- VM_RETURN_HOOK ();
- last_fp = fp;
- fp = SCM_VM_ADDRESS (SCM_VM_FRAME_DYNAMIC_LINK (last_fp));
- sp = SCM_VM_ADDRESS (SCM_VM_FRAME_STACK_POINTER (last_fp));
- pc = SCM_VM_ADDRESS (SCM_VM_FRAME_RETURN_ADDRESS (last_fp));
- ext = SCM_VM_FRAME_EXTERNAL_LINK (fp);
- NEXT;
-}
+/* Copyright (C) 2001 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307 USA
+ *
+ * As a special exception, the Free Software Foundation gives permission
+ * for additional uses of the text contained in its release of GUILE.
+ *
+ * The exception is that, if you link the GUILE library with other files
+ * to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public License.
+ * Your use of that executable is in no way restricted on account of
+ * linking the GUILE library code into it.
+ *
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ *
+ * This exception applies only to the code released by the
+ * Free Software Foundation under the name GUILE. If you copy
+ * code from other Free Software Foundation releases into a copy of
+ * GUILE, as the General Public License permits, the exception does
+ * not apply to the code that you add in this way. To avoid misleading
+ * anyone as to the status of such modified files, you must delete
+ * this exception notice from them.
+ *
+ * If you write modifications of your own for GUILE, it is your choice
+ * whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice. */
+
+/* This file is included in vm_engine.c */
+
+\f
+/*
+ * Basic operations
+ */
+
+/* This must be the first instruction! */
+VM_DEFINE_INSTRUCTION (nop, "nop", 0, 0, 0)
+{
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (halt, "halt", 0, 0, 0)
+{
+ SCM ret;
+ vp->time += scm_c_get_internal_run_time () - start_time;
+ HALT_HOOK ();
+ POP (ret);
+ FREE_FRAME ();
+ SYNC_ALL ();
+ return ret;
+}
+
+VM_DEFINE_INSTRUCTION (break, "break", 0, 0, 0)
+{
+ BREAK_HOOK ();
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (drop, "drop", 0, 0, 0)
+{
+ DROP ();
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (mark, "mark", 0, 0, 1)
+{
+ PUSH (SCM_UNDEFINED);
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (dup, "dup", 0, 0, 1)
+{
+ SCM x = *sp;
+ PUSH (x);
+ NEXT;
+}
+
+\f
+/*
+ * Object creation
+ */
+
+VM_DEFINE_INSTRUCTION (void, "void", 0, 0, 1)
+{
+ PUSH (SCM_UNSPECIFIED);
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (make_true, "make-true", 0, 0, 1)
+{
+ PUSH (SCM_BOOL_T);
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (make_false, "make-false", 0, 0, 1)
+{
+ PUSH (SCM_BOOL_F);
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (make_eol, "make-eol", 0, 0, 1)
+{
+ PUSH (SCM_EOL);
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (make_int8, "make-int8", 1, 0, 1)
+{
+ PUSH (SCM_I_MAKINUM ((signed char) FETCH ()));
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (make_int8_0, "make-int8:0", 0, 0, 1)
+{
+ PUSH (SCM_INUM0);
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (make_int8_1, "make-int8:1", 0, 0, 1)
+{
+ PUSH (SCM_I_MAKINUM (1));
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (make_int16, "make-int16", 2, 0, 1)
+{
+ int h = FETCH ();
+ int l = FETCH ();
+ PUSH (SCM_I_MAKINUM ((signed short) (h << 8) + l));
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (make_char8, "make-char8", 1, 0, 1)
+{
+ PUSH (SCM_MAKE_CHAR (FETCH ()));
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (list, "list", 2, -1, 1)
+{
+ unsigned h = FETCH ();
+ unsigned l = FETCH ();
+ unsigned len = ((h << 8) + l);
+ POP_LIST (len);
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (vector, "vector", 2, -1, 1)
+{
+ unsigned h = FETCH ();
+ unsigned l = FETCH ();
+ unsigned len = ((h << 8) + l);
+ POP_LIST (len);
+ *sp = scm_vector (*sp);
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (list_mark, "list-mark", 0, 0, 0)
+{
+ POP_LIST_MARK ();
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (vector_mark, "vector-mark", 0, 0, 0)
+{
+ POP_LIST_MARK ();
+ *sp = scm_vector (*sp);
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (list_break, "list-break", 0, 0, 0)
+{
+ SCM l;
+ POP (l);
+ for (; !SCM_NULLP (l); l = SCM_CDR (l))
+ PUSH (SCM_CAR (l));
+ NEXT;
+}
+
+\f
+/*
+ * Variable access
+ */
+
+#define OBJECT_REF(i) objects[i]
+#define OBJECT_SET(i,o) objects[i] = o
+
+#define LOCAL_REF(i) SCM_FRAME_VARIABLE (fp, i)
+#define LOCAL_SET(i,o) SCM_FRAME_VARIABLE (fp, i) = o
+
+/* For the variable operations, we _must_ obviously avoid function calls to
+ `scm_variable_ref ()', `scm_variable_bound_p ()' and friends which do
+ nothing more than the corresponding macros. */
+#define VARIABLE_REF(v) SCM_VARIABLE_REF (v)
+#define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o)
+#define VARIABLE_BOUNDP(v) (VARIABLE_REF (v) != SCM_UNDEFINED)
+
+/* ref */
+
+VM_DEFINE_INSTRUCTION (object_ref, "object-ref", 1, 0, 1)
+{
+ register unsigned objnum = FETCH ();
+ CHECK_OBJECT (objnum);
+ PUSH (OBJECT_REF (objnum));
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (local_ref, "local-ref", 1, 0, 1)
+{
+ PUSH (LOCAL_REF (FETCH ()));
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (external_ref, "external-ref", 1, 0, 1)
+{
+ unsigned int i;
+ SCM e = external;
+ for (i = FETCH (); i; i--)
+ {
+ CHECK_EXTERNAL(e);
+ e = SCM_CDR (e);
+ }
+ CHECK_EXTERNAL(e);
+ PUSH (SCM_CAR (e));
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (variable_ref, "variable-ref", 0, 0, 1)
+{
+ SCM x = *sp;
+
+ if (!VARIABLE_BOUNDP (x))
+ {
+ err_args = SCM_LIST1 (x);
+ /* Was: err_args = SCM_LIST1 (SCM_CAR (x)); */
+ goto vm_error_unbound;
+ }
+ else
+ {
+ SCM o = VARIABLE_REF (x);
+ *sp = o;
+ }
+
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (late_variable_ref, "late-variable-ref", 1, 0, 1)
+{
+ unsigned objnum = FETCH ();
+ SCM pair_or_var;
+ CHECK_OBJECT (objnum);
+ pair_or_var = OBJECT_REF (objnum);
+
+ if (!SCM_VARIABLEP (pair_or_var))
+ {
+ SCM mod = scm_resolve_module (SCM_CAR (pair_or_var));
+ /* module_lookup might longjmp */
+ pair_or_var = scm_module_lookup (mod, SCM_CDR (pair_or_var));
+ OBJECT_SET (objnum, pair_or_var);
+ if (!VARIABLE_BOUNDP (pair_or_var))
+ {
+ err_args = SCM_LIST1 (pair_or_var);
+ goto vm_error_unbound;
+ }
+ }
+
+ PUSH (VARIABLE_REF (pair_or_var));
+ NEXT;
+}
+
+/* set */
+
+VM_DEFINE_INSTRUCTION (local_set, "local-set", 1, 1, 0)
+{
+ LOCAL_SET (FETCH (), *sp);
+ DROP ();
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (external_set, "external-set", 1, 1, 0)
+{
+ unsigned int i;
+ SCM e = external;
+ for (i = FETCH (); i; i--)
+ {
+ CHECK_EXTERNAL(e);
+ e = SCM_CDR (e);
+ }
+ CHECK_EXTERNAL(e);
+ SCM_SETCAR (e, *sp);
+ DROP ();
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (variable_set, "variable-set", 0, 1, 0)
+{
+ VARIABLE_SET (sp[0], sp[-1]);
+ scm_set_object_property_x (sp[-1], scm_sym_name, SCM_CAR (sp[0]));
+ sp -= 2;
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (late_variable_set, "late-variable-set", 1, 1, 0)
+{
+ unsigned objnum = FETCH ();
+ SCM pair_or_var;
+ CHECK_OBJECT (objnum);
+ pair_or_var = OBJECT_REF (objnum);
+
+ if (!SCM_VARIABLEP (pair_or_var))
+ {
+ SCM mod = scm_resolve_module (SCM_CAR (pair_or_var));
+ /* module_lookup might longjmp */
+ pair_or_var = scm_module_lookup (mod, SCM_CDR (pair_or_var));
+ OBJECT_SET (objnum, pair_or_var);
+ }
+
+ VARIABLE_SET (pair_or_var, *sp);
+ DROP ();
+ NEXT;
+}
+
+\f
+/*
+ * branch and jump
+ */
+
+#define BR(p) \
+{ \
+ int h = FETCH (); \
+ int l = FETCH (); \
+ signed short offset = (h << 8) + l; \
+ if (p) \
+ ip += offset; \
+ DROP (); \
+ NEXT; \
+}
+
+VM_DEFINE_INSTRUCTION (br, "br", 2, 0, 0)
+{
+ int h = FETCH ();
+ int l = FETCH ();
+ ip += (signed short) (h << 8) + l;
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (br_if, "br-if", 2, 0, 0)
+{
+ BR (!SCM_FALSEP (*sp));
+}
+
+VM_DEFINE_INSTRUCTION (br_if_not, "br-if-not", 2, 0, 0)
+{
+ BR (SCM_FALSEP (*sp));
+}
+
+VM_DEFINE_INSTRUCTION (br_if_eq, "br-if-eq", 2, 0, 0)
+{
+ BR (SCM_EQ_P (sp[0], sp--[1]));
+}
+
+VM_DEFINE_INSTRUCTION (br_if_not_eq, "br-if-not-eq", 2, 0, 0)
+{
+ BR (!SCM_EQ_P (sp[0], sp--[1]));
+}
+
+VM_DEFINE_INSTRUCTION (br_if_null, "br-if-null", 2, 0, 0)
+{
+ BR (SCM_NULLP (*sp));
+}
+
+VM_DEFINE_INSTRUCTION (br_if_not_null, "br-if-not-null", 2, 0, 0)
+{
+ BR (!SCM_NULLP (*sp));
+}
+
+\f
+/*
+ * Subprogram call
+ */
+
+VM_DEFINE_INSTRUCTION (make_closure, "make-closure", 0, 1, 1)
+{
+ SYNC_BEFORE_GC ();
+ *sp = scm_c_make_closure (*sp, external);
+ NEXT;
+}
+
+VM_DEFINE_INSTRUCTION (call, "call", 1, -1, 1)
+{
+ SCM x;
+ nargs = FETCH ();
+
+ vm_call:
+ x = sp[-nargs];
+
+ /*
+ * Subprogram call
+ */
+ if (SCM_PROGRAM_P (x))
+ {
+ program = x;
+ vm_call_program:
+ CACHE_PROGRAM ();
+ INIT_ARGS ();
+ NEW_FRAME ();
+ ENTER_HOOK ();
+ APPLY_HOOK ();
+ NEXT;
+ }
+ /*
+ * Function call
+ */
+ if (!SCM_FALSEP (scm_procedure_p (x)))
+ {
+ /* At this point, the stack contains the procedure and each one of its
+ arguments. */
+ SCM args;
+
+#if 1
+ POP_LIST (nargs);
+#else
+ /* Experimental: Build the arglist on the VM stack. XXX */
+ POP_LIST_ON_STACK (nargs);
+#endif
+ POP (args);
+ *sp = scm_apply (x, args, SCM_EOL);
+ NEXT;
+ }
+ /*
+ * Continuation call
+ */
+ if (SCM_VM_CONT_P (x))
+ {
+ vm_call_cc:
+ /* Check the number of arguments */
+ if (nargs != 1)
+ scm_wrong_num_args (x);
+
+ /* Reinstate the continuation */
+ EXIT_HOOK ();
+ reinstate_vm_cont (vp, x);
+ CACHE_REGISTER ();
+ program = SCM_FRAME_PROGRAM (fp);
+ CACHE_PROGRAM ();
+ NEXT;
+ }
+
+ program = x;
+ goto vm_error_wrong_type_apply;
+}
+
+VM_DEFINE_INSTRUCTION (tail_call, "tail-call", 1, -1, 1)
+{
+ register SCM x;
+ nargs = FETCH ();
+ x = sp[-nargs];
+
+ SCM_TICK; /* allow interrupt here */
+
+ /*
+ * Tail recursive call
+ */
+ if (SCM_EQ_P (x, program))
+ {
+ int i;
+
+ /* Move arguments */
+ INIT_ARGS ();
+ sp -= bp->nargs - 1;
+ for (i = 0; i < bp->nargs; i++)
+ LOCAL_SET (i, sp[i]);
+
+ /* Drop the first argument and the program itself. */
+ sp -= 2;
+
+ /* Call itself */
+ ip = bp->base;
+ APPLY_HOOK ();
+ NEXT;
+ }
+ /*
+ * Proper tail call
+ */
+ if (SCM_PROGRAM_P (x))
+ {
+ EXIT_HOOK ();
+ FREE_FRAME ();
+ program = x;
+ goto vm_call_program;
+ }
+ /*
+ * Function call
+ */
+ if (!SCM_FALSEP (scm_procedure_p (x)))
+ {
+ SCM args;
+ POP_LIST (nargs);
+ POP (args);
+ *sp = scm_apply (x, args, SCM_EOL);
+ goto vm_return;
+ }
+ /*
+ * Continuation call
+ */
+ if (SCM_VM_CONT_P (x))
+ goto vm_call_cc;
+
+ program = x;
+ goto vm_error_wrong_type_apply;
+}
+
+VM_DEFINE_INSTRUCTION (apply, "apply", 1, -1, 1)
+{
+ int len;
+ SCM ls;
+ POP (ls);
+
+ nargs = FETCH ();
+ if (nargs < 2)
+ goto vm_error_wrong_num_args;
+
+ len = scm_ilength (ls);
+ if (len < 0)
+ goto vm_error_wrong_type_arg;
+
+ for (; !SCM_NULLP (ls); ls = SCM_CDR (ls))
+ PUSH (SCM_CAR (ls));
+
+ nargs += len - 2;
+ goto vm_call;
+}
+
+VM_DEFINE_INSTRUCTION (call_cc, "call/cc", 1, 1, 1)
+{
+ SYNC_BEFORE_GC ();
+ PUSH (capture_vm_cont (vp));
+ POP (program);
+ nargs = 1;
+ goto vm_call;
+}
+
+VM_DEFINE_INSTRUCTION (return, "return", 0, 0, 1)
+{
+ vm_return:
+ EXIT_HOOK ();
+ RETURN_HOOK ();
+ FREE_FRAME ();
+
+ /* Restore the last program */
+ program = SCM_FRAME_PROGRAM (fp);
+ CACHE_PROGRAM ();
+ CACHE_EXTERNAL ();
+ NEXT;
+}
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff